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