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