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