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