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