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