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