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