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