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