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