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