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