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