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