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