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)(19,23)(20,31)(21,25)(22,27)(24,28)(26,30)(29,37)(32,44)(33,36)(34,40)(35,41)(38,42)(39,43)(45,48)(46,47)(1,3)(2,6)(4,7)(5,8)(10,13)(11,15)(17,19,22,30)(18,23,27,26)(20,28,33,43)(21,29,35,34)(24,36,39,31)(25,37,41,40)(32,42,46,45)(38,47,48,44)(1,4,5,2)(3,7,8,6)(9,10)(11,14)(12,13)(15,16)(17,20,30,43,22,33,19,28)(18,24,23,36,27,39,26,31)(21,32,34,45,35,46,29,42)(25,38,37,47,41,48,40,44)(3,8)(6,7)(10,13)(14,16)(17,21)(18,25)(19,29)(20,32)(22,35)(23,37)(24,38)(26,40)(27,41)(28,42)(30,34)(31,44)(33,46)(36,47)(39,48)(43,45) involution — undirected(9,11,12,15)(10,14,13,16)(17,19,22,30)(18,23,27,26)(20,28,33,43)(21,34,35,29)(24,36,39,31)(25,40,41,37)(32,45,46,42)(38,44,48,47)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.