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