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