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