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