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