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