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