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