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