One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,6,11,9)(4,7,12,14)(10,13,16,15)(34,36)(35,41)(40,44)(43,47)(1,2)(3,6)(4,7)(5,8)(9,11)(10,13)(12,14)(15,16)(17,18)(19,24)(20,25)(21,26)(22,23)(27,31)(28,29)(30,32)(33,34,38,36)(35,42,41,39)(37,40,45,44)(43,48,47,46)(4,12)(7,14)(10,16)(13,15)(18,23)(21,31)(24,29)(25,32)(33,34,38,36)(35,39,41,42)(37,44,45,40)(43,48,47,46)(1,2)(3,9)(4,7)(5,8)(6,11)(10,15)(12,14)(13,16)(17,19)(18,24)(20,26)(21,25)(22,28)(23,29)(27,30)(31,32)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,48)(45,47) involution — undirected(1,3,5,11)(2,6,8,9)(4,10,12,16)(7,13,14,15)(17,20)(18,25)(19,27)(21,29)(22,30)(23,32)(24,31)(26,28)(33,36,38,34)(35,39,41,42)(37,44,45,40)(43,46,47,48)(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(17,21,22,31)(18,26,23,27)(19,25,28,32)(20,29,30,24)(33,37,38,45)(34,40,36,44)(35,43,41,47)(39,46,42,48)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.