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