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