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