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