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