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