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