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)(17,18,23,28)(19,29,30,41)(20,25,34,40)(21,27,22,26)(24,35,37,32)(31,43,44,48)(33,42,36,39)(38,45,47,46)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(19,30)(24,37)(29,41)(31,44)(32,35)(38,47)(43,48)(45,46)(9,11)(10,13)(12,16)(14,15)(17,19,21,35,23,30,22,32)(18,24,26,41,28,37,27,29)(20,31,36,45,34,44,33,46)(25,38,42,48,40,47,39,43)(3,8)(6,7)(11,16)(13,15)(17,20)(18,25)(19,31)(21,36)(22,33)(23,34)(24,38)(26,42)(27,39)(28,40)(29,43)(30,44)(32,46)(35,45)(37,47)(41,48) involution — undirected(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,21,23,22)(18,26,28,27)(19,32,30,35)(20,33,34,36)(24,29,37,41)(25,39,40,42)(31,45,44,46)(38,48,47,43)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.