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