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