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