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