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