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