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