One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,9,11,6)(4,12,13,7)(10,14,16,15)(17,18,22,25)(19,23,28,21)(20,24,30,32)(26,31,27,29)(33,34,38,41)(35,42,39,36)(37,40,46,48)(43,47,45,44)(1,3,5,11)(2,6,8,9)(4,10,13,16)(7,14,12,15)(17,19,22,28)(18,23,25,21)(20,27,30,26)(24,29,32,31)(33,35)(34,36)(37,43)(38,39)(40,44)(41,42)(45,46)(47,48)(1,2)(3,6)(4,7)(5,8)(9,11)(10,14)(12,13)(15,16)(17,20)(18,24)(19,26)(21,29)(22,30)(23,31)(25,32)(27,28)(33,34,38,41)(35,36,39,42)(37,40,46,48)(43,44,45,47)(1,2)(3,6)(4,12)(5,8)(7,13)(9,11)(10,15)(14,16)(17,20)(18,24)(19,27)(21,31)(22,30)(23,29)(25,32)(26,28)(33,35)(34,36)(37,45)(38,39)(40,47)(41,42)(43,46)(44,48) involution — undirected(1,3)(2,6)(4,10)(5,11)(7,14)(8,9)(12,15)(13,16)(17,19)(18,21)(20,26)(22,28)(23,25)(24,29)(27,30)(31,32)(33,36)(34,39)(35,41)(37,44)(38,42)(40,45)(43,48)(46,47) involution — undirected(1,4,5,13)(2,7,8,12)(3,10,11,16)(6,14,9,15)(17,21)(18,19)(20,29)(22,23)(24,26)(25,28)(27,32)(30,31)(33,37,38,46)(34,40,41,48)(35,43,39,45)(36,44,42,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.