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