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