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