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