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