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