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