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