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