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