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