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