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