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