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