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