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