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)(13,16)(14,15)(34,38)(36,44)(39,41)(42,48) involution — undirected(2,7)(3,12)(4,10)(14,16)(17,18)(19,25)(20,28)(21,22)(23,26)(24,29)(27,31)(30,32)(33,34,37,38)(35,39,43,41)(36,40,44,45)(42,46,48,47)(3,12)(4,10)(5,9)(8,11)(18,22)(19,26)(20,29)(31,32)(33,34,37,38)(35,41,43,39)(36,45,44,40)(42,46,48,47)(1,3,6,12)(2,8,7,11)(4,15,10,13)(5,14,9,16)(17,19)(18,23)(20,30)(21,26)(22,25)(24,32)(27,29)(28,31)(33,34)(35,41)(36,40)(37,38)(39,43)(42,47)(44,45)(46,48)(1,4,6,10)(2,9,7,5)(3,13,12,15)(8,14,11,16)(17,20)(18,24)(19,27)(21,29)(22,28)(23,31)(25,32)(26,30)(33,35,37,43)(34,39,38,41)(36,42,44,48)(40,46,45,47)(1,5,6,9)(2,10,7,4)(3,14,12,16)(8,13,11,15)(17,18)(19,23)(20,24)(21,22)(25,26)(27,31)(28,29)(30,32)(33,36,37,44)(34,40,38,45)(35,42,43,48)(39,46,41,47)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.