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)(17,18,22,26)(19,27,30,31)(20,25,21,24)(23,28,32,29)(35,41)(36,43)(38,46)(39,44)(42,45)(47,48)(1,2)(3,7)(4,12)(5,8)(6,11)(9,16)(10,14)(13,15)(17,19)(18,23)(20,28)(21,29)(22,30)(24,31)(25,27)(26,32)(33,34,37,40)(35,38,42,47)(36,44,43,39)(41,48,45,46)(1,3)(2,7)(4,13)(5,9)(6,14)(8,16)(10,11)(12,15)(18,24)(20,21)(23,31)(25,26)(27,32)(28,29)(33,35)(34,38)(36,45)(37,42)(39,48)(40,47)(41,43)(44,46) involution — undirected(3,9)(7,16)(10,13)(14,15)(17,20,22,21)(18,24,26,25)(19,28,30,29)(23,31,32,27)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.