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