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