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