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